Refrigerating apparatus



April 24, 1934. H. A. GREENWALD REFRIGERATING APPARATUS Filed Aug. 22, 1932 4 Sheets-Shet l xggxx April '24, 1934. H. A. GREENWALD 1,955,957

REFRIGERATING APPARATUS Filed Aug. 22, 1932 4 Sheets-Sheet 2 Q WWW MAM/1f April 24, 1934. H. A. GREENWALD REFRIGERATING APPARATUS Filed Aug. 22, 1932 4 Sheets-Sheet 5 April 24, 1934. f H. A. GREENWALD REFRIGERATING APPARATUS Filed Aug. 22, 1932 4 Sheets-Sheet 4 Patented Apr. 24, 1934 UNITED STATES 1,955,957 REFRIGERATING APPARATUS Harold A. Greenwald, United fitates Radio Marion, Ind., assignor to & Television Corporation,

Marion, 11141., a corporation of Indiana Application August 22, 1932, Serial No. 629,961

1 Claim.

This invention relates generally to refrigerating apparatus and consists of certain novel features of construction, combinations and arrangements of parts, that will be hereinafter more fully 5 described and particularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 is a vertical sectional view through a refrigerator cabinet with apparatus embodying 1 my invention applied thereto;

Figure 2 is a side elevation of my apparatus;

Figure 3 is a front elevation of the construction illustrated in Figure 2;

Figure 4 is a top plan view of the apparatus;

Figure 5 is another end elevation showing the construction illustrated in Figure 1;

Figure 6 is a vertical sectional view through the motor and compressor assembly;

Figure 7 is a vertical sectional view through the float assembly.

Referring now to the drawings, wherein I have disclosed one embodiment of my invention, A is a pump in which the refrigerant is compressed; B is a condenser in which the compressed refrigerant from the pump is condensed; C is a float chamber adapted to receive the refrigerant from the condenser; and D is a cooling unit for receiving the refrigerant from the float chamber. E is an electric motor for driving the pump; F is an electrical condenser associated with the motor for developing high starting torque; G is a relay for cutting out the starting winding of the motor after it starts; and H is a thermostat associated with the cooling unit D and motor E. As shown, the pump A and motor E are located upon opposite sides of a transversely extending partition 1 within a hermetically sealed casing 2. Preferably the piston 3 in the cylinder 4 of the pump is operatively connected to and adapted to be driven by the rotor 5 of the motor by means of the shaft 6, bolt 7, eccentric'8, connecting rod 9 and wrist pin 10 respectively. 11 is an inlet nipple fixed to the end wall 12 of the casing; 13 is tubing for conducting the refrigerant from the cooling unit D to said inlet nipple 11; 14 is a chamber within the casing 2 at the inner end of the nipple 11 and adapted to receive refrigerant therefrom; and 15 is an inlet for the cylinder from the chamber 14. 16 is the cylinder head; 17 is a tube extending laterally from the cylinder head; 18 is an outlet nipple fixed to the end wall 12 and surrounding the tube 17; and 19 is tubing for conducting refrigerant from the nipple 18 to the condenser E. 20 is tubing for conducting the refrigerant from the condenser B to the inlet nipple 21 of the float chamber C, and 22 is tubing for conducting a refrigerant from the outlet nipple 23 of the float chamber to the cooling unit D. The motor E, condenser F for the motor, relay G and control so mechanism (not shown) of the thermostat H may -tion it will be noted that be any suitable construction, and any suitable means may be employed for electrically connecting the same in a suitable circuit.

In the present instance, the casing 2 housing the pump A and motor E, the condensers B and F respectively and relay G are all mounted on top, while the cooling unit D is suspended by suitable brackets 25 and 26 respectively beneath a suitable panel 27 designed for engagement with an opening 28 in the top wall 29 of a refrigerator cabinet. Preferably the casing 2 and condenser F for the motor are located at the forward longitudinal edge of the panel 27; the float chamber C and relay G are at opposite ends of the panel in rear of the casing 2 and condenser F, and the condenser B is at the rear longitudinal edge of the panel in rear of the float chamber C and relay G. A portion 30 of the thermostat H is clamped to the cooling unit D so as to be in thermal contact therewith, while another portion 31 containing the control mechanism is connected by tubing 32 to the portion 30 and is supported on the panel 2'7 beneath the relay G. Thus the parts are constructed and arranged in such a way thatan extremely compact assembly is provided. Preferably a fan 33 and a motor 34: for driving the same are located in a suitable hood 35 between the casing 2 and condenser B so that the proper circulation of air may be obtained about the parts. As shown, the fan 33 is arranged to circulate the air in a direction at substantially right angles to the casing 2 and condenser B and the hood 35 is constructed and arranged so that it directs the .air and forms a protecting housing for the fan. In this connecthe casing 2 is substantially cylindrical'in configuration and is horizontally disposed across and in a common horizontal plane with the fan 33, hence a stream line effect for the air is provided and resistance is reduced to a minimum.

What I claim as my invention is:

A substantially horizontal panel, a refrigerating apparatus, including a refrigerant condenser and a motor-compressor set arranged at opposite ends on the upper side of the panel, a fan between said refrigerant condenser and said motor compressor set, other essential parts of said refrigerating apparatus being arranged on the upper side of said panel so as to direct the blast of air from the fan through the condenser and over the motor-compressor set.

HAROLD A. GREENWALD. 

